Techno Lock PKE REMOTE BBA Smart Key Box First Edition 2022 Audi Type

Techno Lock BBA PKE REMOTE Smart Key Box First Edition 2022 Audi Type

"PKE REMOTE" Passive Entry Systems allow users to unlock a vehicle door or trunk without pressing any buttons.
They are based on a low frequency/radio frequency (LF/RF) communication link between the key fob and the vehicle. LF antennas mounted in exterior mirrors or door handles initiate communication and can detect multiple remote controls from a distance of 1.5 to 2 m.

PKE REMOTE solutions can use a 125 kHz RFID transceiver to authenticate the key fob and establish communication over the UHF link.

When the driver pulls a door handle, the passive entry controller sends an LF challenge to authenticate the driver's key fob.
The fob then sends an RF response to the controller.
If the key fob recognition is successful, the vehicle opens automatically after a few milliseconds.
Vehicles equipped with a PKE system disengage the immobilizer and activate the ignition without the key, provided the driver has the key inside the car.

Drivers can then start most vehicles equipped with a PKE system by pressing a start button or turning an ignition switch.
Additionally, they can lock these vehicles by pressing a button on one of the door handles, touching a capacitive area on a door handle, or simply walking away. The locking method varies by model.

In any PKE system, a key fob must be able to measure the strength of the LF signal generally on three orthogonal axes (x, y, and z) and transmit this information via an RF channel.
This signal strength information, also known as the Received Signal Strength Indicator (RSSI), is collected using the antenna coils connected to the LF receiver.
All data such as a wake-up data pattern (preamble, ID) used as the payload in the protocol is received and passed to the MCU key ring for processing.
The LF receiver includes dedicated control logic that can verify wake-up signals with deficient power consumption.

A backup mode allows the PKE system to be used even when the fob's battery is low, with power supplied to the device via the LF signal.
The device's response is then transmitted by modulating the vehicle's LF signal.
When used in this emergency mode, the key fob device must be placed near the door antenna for entry and exit or in a special dashboard area to start the vehicle.